"It's tough for us all and difficult. His funeral is taking place today, it's incredibly sad. I've lost my brother."

Speaking earlier this week, Faisal said: "His wife has not left his side, she has been at the hospital 24 hours.

"My brother came here for a better life, he went to London at first but I invited him to Birmingham to be with my family because he was alone.

"Then he found a flat just a five-minute walk from us. He had tried to work but he had overstayed his visa and he had heart problems, which meant he had collapsed several times and needed treatment.

"In August, he was struggling with his health and he had decided to go back to Pakistan to be with his family, he had completed all the paperwork, but then he had a cardiac arrest and he needed treatment at Heartlands Hospital.

Nasar Ullah Khan (Image: Doctors of the World)

"I am disappointed because we were told on December 14 that he would be considered for a transplant and they would look into placing him on the waiting list, they were saying he would be having tests and scans.

"Then they said he would not be eligible because of his immigration status, because he did not have leave to remain."

Mr Khan, who had been in the UK for nine years, was refused an operation because he did not have leave to remain in the country.

He was being granted palliative care but had been told he will have to foot a £32,000 bill.

"The NHS are not chasing us for the bill, but we don't know what is going to happen," Faisal said.

Doctors of the World, a humanitarian group supporting people denied access to healthcare, took up Mr Khan's case, helping to secure 'fast-track' visas for his wife and sons to travel from Pakistan.

In a further show of support, businessmen in Birmingham rallied to raise the funds for the end-of-life care and to support Mr Khan and his family.

Mr Khan entered the UK as a visitor with 'entry clearance' that expired in 2011 but remained in the UK without appropriate leave.

He made an unsuccessful request to the Home Office for further leave under Article 3 of the European Convention on Human Rights.

As he is too unwell to travel back to Pakistan, he had made a 'fast-track' application for visas allowing his wife and sons to travel to his bedside.

Connected to his tubes from his hospital bed, Mr Khan made a direct appeal to the British and Pakistani authorities to speed up the process, thought to have been mired in red tape.

His prayers were answered and he had an emotional reunion with his family in his hospital room two weeks ago.